Review the test quickly to determine how to schedule your time, based on number of questions and points allocated for each section.Example:
If you have 50 minutes to complete a 100 multiple choice question exam, you have 30 seconds per question.

Exercise in the evening or morning

Allow for a few minutes to review your test after you have completed it.

Eat well the morning of your test.

Put most of your time into the sections with the most points.

Begin with the easiest parts of the test. If you come to a question you don't know, mark it and move on. Come back to it later. Answering other questions may trigger your memory to retrieve the correct answer.

Check for questions you left blank, spelling, etc. Change only those answers you are reasonably sure are incorrect. Do not change a guess. More often a guess is correct and the correction is not.